CVE-2025-68402 FreshRSS has an authentication bypass due to truncated bcrypt hash [edge branch]
Attackers can bypass authentication in FreshRSS edge branch due to bcrypt hash truncation, allowing unauthorized account access.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-68402?
CVE-2025-68402 is a high-severity authentication bypass vulnerability in FreshRSS, published on 9 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
FreshRSS is a free, self-hostable RSS aggregator. From 57e1a37 - 00f2f04, the lengths of the nonce was changed from 40 chars to 64. password_verify() is currently being called with a constructed string (SHA-256 nonce + part of a bcrypt hash) instead of the raw user password. Due to bcrypt’s 72-byte input truncation, this causes password verification to succeed even when the user enters an incorrect password. This vulnerability is fixed in 1.27.2-dev (476e57b). The issue was only present in the edge branch and never in a stable release.
Weakness: CWE-287
Which versions are affected by CVE-2025-68402?
How do I fix CVE-2025-68402?
No fix has been published for CVE-2025-68402 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2025-68402 being exploited?
There is no known exploitation of CVE-2025-68402 in the wild and no public exploit code.
Sources
Also known as GHSA-pcq9-mq6m-mvmp.